Fabrication of high-temperature superconducting low-pass filter for broad-band harmonic rejection
광대역 고조파 제거를 위한 고온초전도 저역통과필터의 제작
- Han, Seok-Gil (ETRI) ;
- Kang, Gwang-Yong (ETRI) ;
- Ahn, Dal (Soonchunhyang Univ.) ;
- Suh, Jun-Seok (Telwave Inc) ;
- Choi, Chun-Geun (Telwave Inc) ;
- Kim, Sang-Hyeon (Department of Electrical Eng, Gyeongsang National Uni.) ;
- Kwak, Min-Hwan (Department of Electrical Eng, Gyeongsang National Uni.)
- 한석길 (한국전자통신연구원) ;
- 강광용 (한국전자통신연구원) ;
- 안달 (순천향대학교) ;
- 서준석 ((주)텔웨이브) ;
- 최춘근 ((주)텔웨이브) ;
- 김상현 (경상대학교 전기공학과) ;
- 곽민환 (경상대학교 전기공학과)
- Published : 2000.08.16
Abstract
A new type low-pass filter design method based on a coupled line and transmission line theory is proposed to suppress harmonics by attenuation poles in the stop band. The design formula are derived using the equivalent circuit of a coupled transmission line. The new low-pass filter structure is shown to have attractive properties such as compact size, wide stop band range and low insertion loss. The seventh-order low-pass filter designed by present method has a cutoff frequency of 0.9 CHz with a 0.01 dB ripple level. The coupled line type low-pass filter with strip line configuration was fabricated by using a high-temperature superconducting (HTS : YBa